Method for lithium-ion battery Manufacturing Using Silicon-Carbon Bonding to Form a 3D Network for the Negative Electrode

Abstract

A method for manufacturing the negative electrode of a lithium-ion battery. The method involves the use of silicon nanoparticles bonded with carbon atoms to create a robust three-dimensional network, such Si—C bonding enhances the mechanical strength of the battery anode, mitigating expansion problems, and significantly extending the battery's lifespan. As a result, the battery exhibits a prolonged lifespan, capable of enduring 5 to 10 times more charge-discharge cycles compared to conventional batteries. This innovative approach addresses the key limitations of current solutions by combining mechanical strength with enhanced conductivity, offering a promising pathway for the development of high-capacity, durable silicon-based lithium-ion batteries.

1 . A method for manufacturing the negative electrode of a lithium-ion battery, comprising:
 (1) Synthesizing silicon nanoparticles;   (2) Functionalizing the silicon nanoparticles with terminal functionalities selected from alcohol, alkyl groups, and carboxylic acid;   (3) Forming silicon-carbon bonds through click chemistry to create a three-dimensional network and corresponding characterizations;   (4) Assembling the bonded silicon-carbon nanoparticles onto the negative electrode and corresponding characterizations.   
     
     
         2 . The method of  claim 1 , wherein the silicon-carbon bonds enhance the mechanical strength of the anode, mitigating expansion and contraction issues during charge-discharge cycles. 
     
     
         3 . A lithium-ion battery manufactured using the method of  claim 1 , exhibiting an extended lifespan capable of enduring 5 to 10 times more charge-discharge cycles compared to conventional batteries. 
     
     
         4 . The lithium-ion battery of  claim 3 , wherein the improved anode structure contributes to enhanced battery stability and performance.